A wave-shaped steel web counterforce type hanging basket pre-pressing device

Abstract

The utility model provides a kind of wave-shaped steel web counterforce type hanging basket preloading device, belong to beam bridge construction technical field.The wave-shaped steel web counterforce type hanging basket preloading device includes wave-shaped steel web assembly and preloading structure.The wave-shaped steel web assembly includes several wave-shaped steel webs and roof beam, the preloading structure includes bottom support and jacking part, hanging basket bottom die is installed on the bottom support, the output of jacking part is closely attached with the bottom of wave-shaped steel web, and hanging basket runner is rollingly installed on the roof beam.The utility model is prepressed by wave-shaped steel web and double-spliced i-beam cooperation first hydraulic cylinder, and the quantity of operating personnel and hoisting operating material is less;preloading load value is clear, accurate and controllable;compared with conventional sandbag etc.Heap loading prepressing efficiency is high, avoid the risk of unreasonable load distribution, overcome the defect of insufficient heap loading prepressing;It is more suitable for different construction environment.

Description

Technical Field

[0001] This invention relates to the field of beam bridge construction technology, and more specifically, to a preloading device using a corrugated steel web reaction formwork. Background Technology

[0002] Bridge construction refers to the process of building a bridge according to its design specifications; it mainly includes bridge construction technology, organization, management, and quality control. Cantilever casting with formwork is a common method for constructing the main beams of long-span beam bridges. Before cantilever casting, the formwork must be pre-stressed to verify its actual load-bearing capacity and reliability, eliminate inelastic deformation, understand the deformation patterns of the formwork system under graded loads, and obtain elastic deformation data under corresponding loads. This provides a basis for formwork stiffness control, guiding subsequent construction and ensuring that the bridge alignment meets specifications and design requirements.

[0003] Currently, domestic and international methods for preloading using hanging baskets mainly employ surcharge preloading, sandbag surcharge and rebar surcharge, water tank preloading, and steel strand reverse tensioning. Surcharge preloading involves large material inputs, numerous horizontal and vertical transport operations, a large workload, and a long duration. It also occupies horizontal and vertical transport machinery and equipment, hindering construction on other work surfaces. This is particularly problematic for projects with tight schedules, directly and indirectly impacting the project's economic and time efficiency. Water tank preloading is suitable for construction areas with abundant water resources. It utilizes water tanks or water bags to replace solid components, calculates the water volume according to the loading gradient control value, and draws the loading grade water level lines according to the volume. Loading is then completed by injecting water into the water tank using a high-pressure pump. This method is simple and quick, with simple and accurate graded load measurement, and does not require a large amount of lifting equipment. However, the processing cost of water tanks and water bags is high, and their turnover rate is low. Due to the low density of water, implementation is difficult when the preloading load is large. The steel strand reverse tension method is simple, convenient, time-saving, and easy to use, making it suitable for the preloading of cable-stayed baskets in mountain valleys. However, the elongation of the steel strand has a certain impact on the accuracy of the preloading results of the basket. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a preloading device using a corrugated steel web reaction-type hanging basket, which aims to improve the problems of the corrugated steel web reaction-type hanging basket preloading device, which usually requires a large amount of material input, has a long duration, easily affects the project progress, has high cost, and has a certain impact on accuracy, and is not suitable for adapting to different construction environments.

[0005] This invention is implemented as follows:

[0006] This invention provides a pre-stressing device for a hanging basket using the reaction force of a corrugated steel web, comprising a corrugated steel web assembly and a pre-stressing structure.

[0007] The corrugated steel web assembly includes several corrugated steel webs and a top beam. One side of each corrugated steel web is connected to the previous corrugated steel web section by high-strength bolts. A top beam is fixed to the upper end of each corrugated steel web. The pre-stressing structure includes a bottom support, a top support, and a lifting member. A hanging basket bottom mold is installed on the bottom support. The bottom support and the top support are connected by a lifting member. The lifting member is installed on the top surface of the bottom support. The output end of the lifting member is in close contact with the bottom of the corrugated steel web. A hanging basket walker is installed at the bottom of the top support. The hanging basket walker is rotatably mounted on the top beam.

[0008] In one embodiment of the present invention, the corrugated steel webs are connected by welds, the top surface of the top beam has a groove, and the side surface of the top beam has a first through hole evenly provided.

[0009] In one embodiment of the present invention, the bottom support includes two first hanging basket crossbeams and a hanging basket bottom longitudinal beam, the hanging basket bottom longitudinal beam being evenly installed between the first hanging basket crossbeams, and the hanging basket bottom mold being installed on the hanging basket bottom longitudinal beam.

[0010] In one embodiment of the present invention, the top support includes two second hanging basket crossbeams and two hanging basket support beams, the two hanging basket support beams are installed between the two second hanging basket crossbeams, and the hanging basket walker is symmetrically installed at the bottom of the two second hanging basket crossbeams.

[0011] In one embodiment of the present invention, the lifting component includes a double-I-beam and a first hydraulic cylinder. The double-I-beam is mounted on the bottom mold of the hanging basket, and the first hydraulic cylinder is mounted on the top surface of the double-I-beam. An I-shaped support is fixed to the output end of the first hydraulic cylinder. A wedge-shaped pad is provided on the top surface of the I-shaped support, and the surface of the wedge-shaped pad is in close contact with the bottom of the corrugated steel web.

[0012] In one embodiment of the present invention, the lifting member includes a basket sling, a first spreader beam, and a second spreader beam. One end of the basket sling is installed on the top surface of the bottom longitudinal beam of the basket, and the other end of the basket sling extends through the second crossbeam of the basket to the outside. The first spreader beam is fixed to the top surface of the second crossbeam of the basket, and the basket sling extends through the second crossbeam of the basket to the outside. A second hydraulic cylinder is installed on the first spreader beam, and the output end of the second hydraulic cylinder is fixed to the second spreader beam. The basket sling passes through the second spreader beam.

[0013] In one embodiment of the present invention, the hanging basket sling includes a first sling and a second sling. One end of the first sling is installed on the bottom longitudinal beam of the hanging basket, and the other end of the second sling passes through the second hanging basket crossbeam, the first spreader beam and the second spreader beam. A connecting plate is provided between the first sling and the second sling. A second through hole is provided in the first sling, the second sling and the connecting plate. A screw passes through the inside of the second through hole and is fixed by a nut.

[0014] In one embodiment of the present invention, a pin passes through one side of the second spreader beam, and the pin passes through the second through hole.

[0015] The beneficial effects of the present invention are as follows: The present invention provides a pre-loading device for a hanging basket using the reaction force of a corrugated steel web, which is designed as described above. In use, a steel column is inserted into the first through hole, and then a jack is placed in the groove inside the top beam, so that the base of the jack is in close contact with the steel column and the output end of the jack is in close contact with the hanging basket traveler. The jack is used to push the hanging basket traveler to move and move the entire hanging basket pre-loading device to the predetermined position. Then, the second hydraulic cylinder extends upward, and during the extension process, it drives the hanging basket lifting belt to move upward, thereby driving the bottom support to move upward so that the lifting component reaches the designated position. At this time, the wedge-shaped pad is inserted. Between the I-beam support and the corrugated steel web, the first hydraulic cylinder is simultaneously activated for pre-loading and lifting. At this time, the stability of the hanging basket and the reaction-type cable-stayed hanging basket pre-loading device are checked. The initial elevation of each measuring point before pre-loading of the cable-stayed hanging basket is measured. According to the synchronous, symmetrical, and graded loading and unloading, after the stabilization of each loading and unloading stage, the elevation of each observation point is measured and the data is checked. After the pre-loading is completed, the cable-stayed hanging basket pre-loading device is removed. In this way, the corrugated steel web and the double-I-beam are used in conjunction with the first hydraulic cylinder for pre-loading. The amount of personnel and hoisting materials required is small; the pre-loading load value is clear, accurate and controllable; it is more effective than conventional sandbag and other surcharge pre-loading, avoids the risk of unreasonable load distribution, overcomes the defect of insufficient surcharge pre-loading; it is safe and controllable and more suitable for different construction environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the preloading device for a hanging basket using the reaction force of a corrugated steel web provided in an embodiment of the present invention.

[0018] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 For the present invention Figure 1 Enlarged view of section B in the middle.

[0020] In the diagram: 100, corrugated steel web assembly; 110, corrugated steel web; 120, weld; 130, high-strength bolt; 140, top beam; 141, first through hole; 200, pre-stressing structure; 210, bottom support; 211, first hanging basket crossbeam; 212, hanging basket bottom longitudinal beam; 220, top support; 221, second hanging basket crossbeam; 222, hanging basket support beam; 230, hanging basket bottom formwork; 240, lifting component; 241. Double-jointed I-beam; 242. First hydraulic cylinder; 243. I-shaped support seat; 244. Wedge-shaped pad; 250. Lifting component; 251. Hanging basket sling section; 2511. First sling; 2512. Second sling; 2513. Connecting plate; 2514. Second through hole; 252. First spreader beam; 253. Second hydraulic cylinder; 254. Second spreader beam; 2541. Pin shaft; 260. Hanging basket travel mechanism. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example

[0023] Please see Figure 1 , Figure 3 The present invention provides a technical solution: a pre-compression device for a hanging basket using a corrugated steel web reaction force, comprising a corrugated steel web assembly 100 and a pre-compression structure 200.

[0024] Please see Figure 1 The corrugated steel web assembly 100 includes several corrugated steel webs 110 and a top beam 140. One side of the corrugated steel web 110 is connected to the previous corrugated steel web 110 by high-strength bolts 130, and the top beam 140 is fixed to the upper end of the corrugated steel web 110.

[0025] The corrugated steel web plates 110 are connected by welds 120. The top surface of the top beam 140 has a groove, and the side of the top beam 140 is evenly provided with first through holes 141. A steel column can be inserted into the first through hole 141. Then, the jack is placed inside the groove so that the output end of the jack is in close contact with the hanging basket walker 260. The extension of the jack can push the hanging basket walker 260 to move, thereby pulling the entire preloading device to move.

[0026] Please see Figure 1 , Figure 3 The pre-stressing structure 200 includes a bottom support 210, a top support 220, and a lifting member 240. A hanging basket bottom mold 230 is installed on the bottom support 210. The bottom support 210 and the top support 220 are connected by a lifting member 250. The lifting member 240 is installed on the top surface of the bottom support 210. The output end of the lifting member 240 is in close contact with the bottom of the corrugated steel web 110. A hanging basket walker 260 is installed at the bottom of the top support 220. The hanging basket walker 260 is rolled on the top beam 140.

[0027] The bottom support 210 includes two first hanging basket crossbeams 211 and a hanging basket bottom longitudinal beam 212. The hanging basket bottom longitudinal beam 212 is evenly installed between the first hanging basket crossbeams 211, and the hanging basket bottom mold 230 is installed on the hanging basket bottom longitudinal beam 212. The top support 220 includes two second hanging basket crossbeams 221 and two hanging basket support beams 222. The two hanging basket support beams 222 are installed between the two second hanging basket crossbeams 221, and the hanging basket walker 260 is symmetrically installed at the bottom of the two second hanging basket crossbeams 221. The bottom support 210 and the top support 220 are designed to facilitate the support of the entire pre-compression device.

[0028] The lifting component 240 includes a double-I-beam 241 and a first hydraulic cylinder 242. The double-I-beam 241 is mounted on the bottom mold of the hanging basket 230. The first hydraulic cylinder 242 is mounted on the top surface of the double-I-beam 241. An I-shaped support 243 is fixed to the output end of the first hydraulic cylinder 242. A wedge-shaped pad 244 is provided on the top surface of the I-shaped support 243. The surface of the wedge-shaped pad 244 is in close contact with the bottom of the corrugated steel web 110. Here, the double-I-beam 241 is moved upward by the first hydraulic cylinder 242. The wedge-shaped pad 244 is in close contact with the bottom of the corrugated steel web 110, thereby playing a reaction role.

[0029] The lifting component 250 includes a basket lifting strap 251, a first spreader beam 252, and a second spreader beam 254. One end of the basket lifting strap 251 is installed on the top surface of the bottom longitudinal beam 212 of the basket, and the other end of the basket lifting strap 251 extends to the outside through the second basket crossbeam 221. The first spreader beam 252 is fixed to the top surface of the second basket crossbeam 221, and the basket lifting strap 251 extends to the outside through the second basket crossbeam 221. A second hydraulic cylinder 253 is installed on the first spreader beam 252, and the output end of the second hydraulic cylinder 253 is fixed to the second spreader beam 254. The basket lifting strap 251 passes through the second spreader beam 254. The basket lifting strap 251 includes a first lifting strap 2511 and a second lifting strap 2512. One end of the first lifting strap 2511 is installed at the bottom of the basket. On the longitudinal beam 212, the other end of the second sling 2512 passes through the second hanging basket crossbeam 221, the first spreader beam 252, and the second spreader beam 254. A connecting plate 2513 is provided between the first sling 2511 and the second sling 2512. The first sling 2511, the second sling 2512, and the connecting plate 2513 are all provided with second through holes 2514. Screws pass through the inside of the second through holes 2514 and are fixed by nuts. A pin 2541 passes through one side of the second spreader beam 254. The pin 2541 passes through the second through hole 2514 and extends upward through the second hydraulic cylinder 253. During the extension process, it drives the hanging basket sling part 251 to move upward, thereby driving the bottom support 210 to move upward so that the lifting part 240 reaches the designated position.

[0030] Specifically, the working principle of the corrugated steel web reaction type hanging basket preloading device is as follows: In use, one side of the corrugated steel web 110 is fixed to the previous section of the corrugated steel web 110 by high-strength bolts 130. The two corrugated steel webs 110 are fixed together by lap joint fillet welds 120. Then, the steel column is inserted into the first through hole 141. At this time, the jack is placed in the groove inside the top beam 140, so that the base of the jack is close to the steel column and the output end of the jack is close to the hanging basket traveler 260. The jack is used to push the hanging basket traveler 260 to move and move the entire hanging basket preloading device to the predetermined position. Then, the second hydraulic cylinder 253 extends upward. During the extension process, it drives the hanging basket lifting belt part 251 to move upward, thereby driving the bottom support 210 to move upward so that the lifting part 240 reaches the designated position. At this time, the wedge-shaped pad 244 is inserted. Between the I-beam support 243 and the corrugated steel web 110, four first hydraulic cylinders 242 are simultaneously activated for pre-loading and lifting. At this time, the stability of the hanging basket and the reaction-type cable-stayed hanging basket pre-loading device are checked. The initial elevation of each measuring point before pre-loading of the cable-stayed hanging basket is measured. According to synchronous, symmetrical, and graded loading and unloading, after the stabilization of each loading and unloading stage, the elevation of each observation point is measured and the data is checked. After the pre-loading is completed, the cable-stayed hanging basket pre-loading device is removed. In this way, the corrugated steel web 110 and the double-splitting I-beam 241 are used in conjunction with the first hydraulic cylinders 242 for pre-loading. The amount of personnel and hoisting materials required is small; the pre-loading load value is clear, accurate and controllable; it is more effective than conventional sandbag and other surcharge pre-loading, avoids the risk of unreasonable load distribution, overcomes the defect of insufficient surcharge pre-loading; it is safe and controllable and more suitable for different construction environments.

[0031] It should be noted that the specific model and specifications of the first hydraulic cylinder 242 and the second hydraulic cylinder 253 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0032] The power supply and operating principle of the first hydraulic cylinder 242 and the second hydraulic cylinder 253 are clear to those skilled in the art and will not be described in detail here.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A pre-stressing device for a hanging basket using a corrugated steel web reaction force, comprising a corrugated steel web assembly (100) and a pre-stressing structure (200) mounted on the corrugated steel web assembly (100), characterized in that, The corrugated steel web assembly (100) includes several corrugated steel webs (110) and a top beam (140). One side of the corrugated steel web (110) is connected to the previous corrugated steel web (110) by a high-strength bolt (130). The top beam (140) is fixed at the upper end of the corrugated steel web (110). The corrugated steel webs (110) are connected by a weld (120). The top surface of the top beam (140) has a groove, and the side of the top beam (140) is uniformly provided with first through holes (141). The pre-stressing structure (200) includes a bottom support (210), a top support (220), and a lifting member (240). A hanging basket bottom mold (230) is installed on the bottom support (210). The bottom support (210) and the top support (220) are connected by a lifting member (250). The lifting member (240) is installed on the top surface of the bottom support (210). The output end of the lifting member (240) is in close contact with the bottom of the corrugated steel web (110). A hanging basket walker (260) is installed at the bottom of the top support (220). The hanging basket walker (260) is rolled on the top beam (140). The bottom support (210) includes two first hanging basket crossbeams (211) and a hanging basket bottom longitudinal beam (212). The hanging basket bottom longitudinal beam (212) is evenly installed between the first hanging basket crossbeams (211), and the hanging basket bottom mold (230) is installed on the hanging basket bottom longitudinal beam (212). The top support (220) includes two second hanging basket crossbeams (221) and two hanging basket support beams (222). The two hanging basket support beams (222) are installed between the two second hanging basket crossbeams (221), and the hanging basket walker (260) is symmetrically installed at the bottom of the two second hanging basket crossbeams (221). The lifting component (240) includes a double-I-beam (241) and a first hydraulic cylinder (242). The double-I-beam (241) is installed on the bottom mold of the hanging basket (230). The first hydraulic cylinder (242) is installed on the top surface of the double-I-beam (241). An I-shaped support (243) is fixed to the output end of the first hydraulic cylinder (242). A wedge-shaped pad (244) is provided on the top surface of the I-shaped support (243). The surface of the wedge-shaped pad (244) is in close contact with the bottom of the corrugated steel web (110).

2. The preloading device for a hanging basket using the reaction force of corrugated steel web as described in claim 1, characterized in that, The lifting component (250) includes a basket sling (251), a first spreader beam (252), and a second spreader beam (254). One end of the basket sling (251) is installed on the top surface of the bottom longitudinal beam (212) of the basket, and the other end of the basket sling (251) extends through the second basket crossbeam (221) to the outside. The first spreader beam (252) is fixed on the top surface of the second basket crossbeam (221), and the basket sling (251) extends through the second basket crossbeam (221) to the outside. A second hydraulic cylinder (253) is installed on the first spreader beam (252), and the output end of the second hydraulic cylinder (253) is fixed to the second spreader beam (254). The basket sling (251) passes through the second spreader beam (254).

3. The preloading device for a hanging basket using the reaction force of corrugated steel web as described in claim 2, characterized in that, The basket sling section (251) includes a first sling (2511) and a second sling (2512). One end of the first sling (2511) is installed on the bottom longitudinal beam (212) of the basket, and the other end of the second sling (2512) passes through the second basket crossbeam (221), the first spreader beam (252) and the second spreader beam (254). A connecting plate (2513) is provided between the first sling (2511) and the second sling (2512). A second through hole (2514) is provided on the first sling (2511), the second sling (2512) and the connecting plate (2513). A screw passes through the second through hole (2514) and is fixed by a nut.

4. The preloading device for a hanging basket using the reaction force of corrugated steel web as described in claim 3, characterized in that, A pin (2541) passes through one side of the second spreader beam (254), and the pin (2541) passes through the second through hole (2514).

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